<template>
  <div>
    <!-- 主体部分 -->
    <section class="main">
      <input id="toggle-all"
             class="toggle-all"
             type="checkbox" />
      <label for="toggle-all"
             @click="changeAll($event)">Mark all as complete</label>
      <ul class="todo-list">
        <!-- 当任务已完成，可以给 li 加上 completed 类，会让元素加上删除线 -->
        <li :class="{ completed:item.flag }"
            :key="item.id"
            v-for="item in list">
          <div class="view">
            <input class="toggle"
                   type="checkbox"
                   :checked="item.flag"
                   @change="changeFlag(item.id,$event)" />
            <label>{{ item.value }}</label>
            <button class="destroy"
                    @click="delList(item.id)"></button>
          </div>
        </li>
        <!-- <li>
          <div class="view">
            <input class="toggle" type="checkbox" />
            <label>行万里路</label>
            <button class="destroy"></button>
          </div>
        </li> -->
      </ul>
    </section>
  </div>
</template>

<script>
export default {
  props: {
    list: {
      type: Array,
      required: true,
    }
  },
  methods: {
    changeFlag (id, e) {
      this.$emit('changeFlag', id, e.target.checked)
    },
    delList (id) {
      this.$emit('delList', id)
    },
    changeAll (e) {
      this.$emit('changeAll', e.target.checked)
    }
  }
}
</script>

<style scoped></style>
